离开时如何杀死Android活动，以便无法从后退按钮访问它？
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How to kill an Android activity when leaving it so that it cannot be accessed from the back button?
提问by JohnRock
In an given Android activity, I would like to start a new activity for the user at some point. Once they leave the first activity and arrive at the second, the first activity is stale and I want to remove it completely so it can not be accessed again from the back button.
在给定的 Android 活动中，我想在某个时候为用户启动一个新活动。一旦他们离开第一个活动并到达第二个活动，第一个活动就过时了，我想将其完全删除，以便无法通过后退按钮再次访问它。
How is the best way to accomplish this? How do I kill or destroy this activity immediately after the user has launched the new activity?
实现这一目标的最佳方法是什么？如何在用户启动新活动后立即终止或销毁此活动？
回答by CaseyB
You just need to call finish()
你只需要打电话 finish()
Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();
回答by jqpubliq
回答by Jmorvan
you can use:
您可以使用：
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
回答by Danke Xie
You can also add android:noHistory="true"to your Activitytag in AndroidManifest.xml.
您还可以添加android:noHistory="true"到您Activity的标签AndroidManifest.xml。
<activity
...
android:noHistory="true">
</activity>
回答by RobGThai
Yes, all you need to do is call finish() in any Activity you would like to close.
是的，您需要做的就是在要关闭的任何活动中调用 finish() 。
回答by JBL AK-47
Write this in each "new activity" after you initialized your new intent->
初始化新意图后，将其写入每个“新活动”中->
Intent i = new Intent(this, yourClass.class);
startActivity(i);
finish();
回答by kdblue
Finally, I got a solution!
终于，我得到了一个解决方案！
My Context is:- I want disconnect socket connection when activity destroyed, I tried to finish() activity but it didn't work me, its keep connection live somewhere.
我的上下文是：- 当活动被破坏时，我想断开套接字连接，我试图完成（）活动，但它对我不起作用，它使连接保持在某处。
so I use android.os.Process.killProcess(android.os.Process.myPid());its kill my activity and i used android:excludeFromRecents="true"for remove from recent activity .
所以我用 android.os.Process.killProcess(android.os.Process.myPid());它杀死我的活动，我用来android:excludeFromRecents="true"从最近的活动中删除。
回答by Mayuran Balasubramaniam
Add this attribute to you activity in manifest file. android:noHistory="true"
将此属性添加到清单文件中的活动。机器人：noHistory =“真”
回答by Soni Kumar
You just need to use below code when launching the new activity.
您只需要在启动新活动时使用以下代码。
startActivity(new Intent(this, newactivity.class));
finish();
